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Ultra Wide-band (UWB) in recent times draws much consideration as an indoor short range high-speed wireless communication technology for future networks. Direct sequence spread ultra-wide-band (DS-UWB) systems uses extremely short pulses and has the advantage of high path resolution and can get multi-path diversity. Mainly it is useful for indoor communication, which generates many multipaths. The...
Beamforming system, we estimate the signal of interest arriving form some specific directions in the presence of noise and interference signals with the help of an array sensors. These sensors are located at different spatial position and sample the propagating waves in space. The collected samples are then processed to null out the interfering signals and spatially extract the desired signal. Finally,...
In diversity rich environments, such as in Ultra-Wideband (UWB) applications, a priori determination of the number of strong diversity branches is difficult, because of the considerably large number of diversity paths, which are characterized by a variety of power delay profiles (PDPs). Rake implementations have been proposed in this paper, in order to reduce the number of the estimated and combined...
Smart antenna is the most efficient leading innovation for maximum capacity and improved quality and coverage. Using beam forming algorithms the weight of antenna arrays can be adjusted to form certain amount of adaptive beam to track corresponding users automatically and at the same time to minimize interference arising from other users by introducing nulls in their directions. This paper focuses...
The bit error rate (BER) performance of the Code Division Multiple Access (CDMA) cellular system based on IS-95 standard in the presence of an additive white Gaussian noise (AWGN) and interference has been investigated in this paper. The performance is evaluated under noise and interference for the CDMA forward link. Rake receiver is used in CDMA-based (Code Division Multiple Access) systems and can...
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